161874516 has 24 divisors (see below), whose sum is σ = 379118880. Its totient is φ = 53756512.

The previous prime is 161874511. The next prime is 161874539. The reversal of 161874516 is 615478161.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161874511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21846 + ... + 28301.

It is an arithmetic number, because the mean of its divisors is an integer number (15796620).

Almost surely, 2^161874516 is an apocalyptic number.

It is an amenable number.

161874516 is an abundant number, since it is smaller than the sum of its proper divisors (217244364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161874516 is a wasteful number, since it uses less digits than its factorization.

161874516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50423 (or 50421 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 161874516 is about 12722.9916293300. The cubic root of 161874516 is about 544.9953886769.

The spelling of 161874516 in words is "one hundred sixty-one million, eight hundred seventy-four thousand, five hundred sixteen".